Subsections

- Library
- Description
- Dialog Box
- Default properties
- Interfacing function
- Computational function (type 1)

##
Floating scope

### Library

Sinks

### Description

Floating scope. This scope has no input port because it displays the value(s) on the designated link. Advantage is that various signals can be displayed by changing block parameter without modifying the diagram (and thus forcing a recompile).

### Dialog Box

Set Scope parameters |
Color (0) or mark (0) vector (8 entries) | 1 3 5 7 9 11 13 15
Output window number | 101
Output window position | []
Output window sizes | [600;400]
Ymin | -15
Ymax | 15
Refresh period | 30
Buffer size | 2
Links to view | 1

- Color : a vector of integers. The i-th element is the color number () or dash type () used to draw the evolution of the i-th input port signal. See plot2d for color (dash type) definitions.
- Output window number :The number of graphic window used for the display. It is often good to use high values to avoid conflict with palettes and Super Block windows. If default value is used (1), Scicos define the output window number.
- Output window position:a 2 vector specifying the coordinates of the upper left corner of the graphic window. Answer [] for default window position.
- Output window sizes: a 2 vector specifying the coordinates of the upper left corner of the graphic window. Answer [] for default window position.
- Ymin: Minimum values of the input; used to set up the Y-axis of the plot in the graphics window.
- Ymax: Maximum values of the input; used to set up the Y-axis of the plot in the graphics window.
- Refresh period: Maximum value on the X-axis (time). The plot is redrawn when time reaches a multiple of this value.
- Buffer size:To improve efficiency it is possible to buffer the input data. The drawing is only done after each Buffer size call to the block.
- Links to view: this number can be obtained by clicking on the link after compiling the diagram.

### Default properties

- always active: no
- direct-feedthrough: yes
- zero-crossing: no
- mode: no
- number/sizes of inputs: 0 /
- number/sizes of outputs: 0 /
- number/sizes of activation inputs: 1 / 1
- number/sizes of activation outputs: 0 /
- continuous-time state: no
- discrete-time state: yes
- name of computational function: fscope

### Interfacing function

`scilab/macros/scicos_blocks/sinks/FSCOPE_f.sci`

### Computational function (type 1)

          subroutine fscope(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,
         &     rpar,nrpar,ipar,nipar)
    c     Copyright INRIA
    c     Scicos block simulator
    c     ipar(1) = win_num
    c     ipar(2) = 0/1 color flag
    c     ipar(3) = buffer size

    c     ipar(4:11) = line type for ith curve
    c
    c     ipar(12:13) : window position
    c     ipar(14:15) : window dimension
    c
    c     rpar(1)=dt
    c     rpar(2)=ymin
    c     rpar(3)=ymax
    c     rpar(4)=periode
    c
          double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(8)
          integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
          integer nipar,nu

    c
    c
          double precision dt,ymin,ymax,per,rect(4),tsave
          integer i,n,verb,cur,na,v,wid,nax(4),nvec(1)
          character*20 strf,buf
          character*4 name
          double precision dv
          double precision frect(4)
    c      character*(4) logf

          data frect / 0.00d0,0.00d0,1.00d0,1.00d0/
          data cur/0/,verb/0/

    c
          iwp=12
          iwd=14

    c
             call dr1('xgetdr'//char(0),name,v,v,v,v,v,v,
         $        dv,dv,dv,dv)
             if(name(1:3).ne.'Rec') then
                call dr1('xsetdr'//char(0),'Rec'//char(0),v,v,v,v,v,v,
         $           dv,dv,dv,dv)
             endif

          nu=ipar(16)
          if(flag.eq.2) then

          call getouttb(nu,ipar(17),u(1))

             dt=rpar(1)
             ymin=rpar(2)
             ymax=rpar(3)
             per=rpar(4)
             wid=ipar(1)
             N=ipar(3)

             K=int(z(1))
             if(K.gt.0) then
                n1=int(z(1+K)/per)
                if(z(1+K).lt.0.0d0) n1=n1-1
             else
                n1=0
             endif
    c
             tsave=t
             if(dt.gt.0.0d0) t=z(1+K)+dt
    c
             n2=int(t/per)
             if(t.lt.0.0d0) n2=n2-1
    c
    c     add new point to the buffer
             K=K+1
             z(1+K)=t
             do 01 i=1,nu
               z(1+N+(i-1)*N+K)=u(i)
     01      continue
             z(1)=K
             if(n1.eq.n2.and.K.lt.N) then
                t=tsave
                return
             endif
    c
    c     plot 1:K points of the buffer
             call dr1('xget'//char(0),'window'//char(0),verb,cur,na,v,v,v,
         $        dv,dv,dv,dv)
             if(cur.ne.wid) then
                call dr1('xset'//char(0),'window'//char(0),wid,v,v,v,v,v,
         $           dv,dv,dv,dv)
             endif
             call dr1('xset'//char(0),'use color'//char(0),ipar(2),0,0,
         &        0,0,v,dv,dv,dv,dv)
             if(K.gt.0) then
                do 10 i=1,nu
    c               if(ipar(3+i).ge.0.or.flag.eq.1) then
                      call dr1('xpolys'//char(0),'v'//char(0),v,v,
         &                 ipar(3+i),1,K,v,z(2),z(2+N+(i-1)*N),dv,dv)
    c               endif
     10         continue
             endif
    c     shift buffer left
             z(2)=z(1+K)
             do 15 i=1,nu
                z(1+N+(i-1)*N+1)=z(1+N+(i-1)*N+K)
     15      continue
             z(1)=1.0d0
             if(n1.ne.n2) then
    c     clear window
                nax(1)=2
                nax(2)=10
                nax(3)=2
                nax(4)=10
                call dr1('xclear'//char(0),'v'//char(0),v,v,v,v,v,v,
         $           dv,dv,dv,dv)
                call dr1('xset'//char(0),'use color'//char(0),ipar(2),0,0,
         &           0,0,v,dv,dv,dv,dv)
                call dr('xstart'//char(0),'v'//char(0),wid,v,v,v,v,v,
         $           dv,dv,dv,dv)
                buf='t@ @input and output'
                strf='011'//char(0)
                rect(1)=per*(1+n1)
                rect(2)=ymin
                rect(3)=per*(2+n1)
                rect(4)=ymax
                call dr1('xset'//char(0),'dashes'//char(0),0,0,0,
         &           0,0,v,dv,dv,dv,dv)
    c            call dr1('xset'//char(0),'clipping-p'//char(0),-1.0d0,
    c     &           -1.0d0,200000.0d0,200000.0d0,v,dv,dv,dv,dv)
                call plot2d(rect(1),rect(2),1,1,-1,strf,buf,rect,nax,4,21)
    c            call dr1('xset'//char(0),'clipping'//char(0),rect(1),ymin,per,
    c     &           ymax,v,dv,dv,dv,dv)
             endif
             t=tsave
    c
          elseif(flag.eq.4) then
             wid=ipar(1)
             N=ipar(3)
             ymin=rpar(2)
             ymax=rpar(3)
             per=rpar(4)
             nax(1)=2
             nax(2)=10
             nax(3)=2
             nax(4)=10
             n1=int(t)/per
             if(t.le.0.0d0) n1=n1-1
             call sciwin()
             call dr1('xget'//char(0),'window'//char(0),verb,cur,na,v,v,v,
         $        dv,dv,dv,dv)
             if(cur.ne.wid) then
                call dr1('xset'//char(0),'window'//char(0),wid,v,v,v,v,v,
         $           dv,dv,dv,dv)
             endif

             if(ipar(iwp).ge.0) then
                call dr1('xset'//char(0),'wpos'//char(0),ipar(iwp),
         $           ipar(iwp+1),v,v,v,v,dv,dv,dv,dv)
             endif
             if(ipar(iwd).ge.0) then
                call dr1('xset'//char(0),'wdim'//char(0),ipar(iwd),
         $           ipar(iwd+1),v,v,v,v,dv,dv,dv,dv)
    c     to force dimensions update
                call dr1('xset'//char(0),'window'//char(0),wid,v,v,v,v,v,
         $           dv,dv,dv,dv)
             endif
             rect(1)=per*(1+n1)
             rect(2)=ymin
             rect(3)=per*(2+n1)
             rect(4)=ymax
             call  setscale2d(frect,rect,'nn'//char(0))
             call dr1('xset'//char(0),'use color'//char(0),ipar(2),0,0,
         &        0,0,v,dv,dv,dv,dv)
             call dr1('xset'//char(0),'alufunction'//char(0),3,0,0,
         &        0,0,v,dv,dv,dv,dv)
             call dr1('xclear'//char(0),'v'//char(0),v,v,v,v,v,v,
         $        dv,dv,dv,dv)
             call dr('xstart'//char(0),'v'//char(0),wid,v,v,v,v,v,
         $        dv,dv,dv,dv)

             buf='t@ @input and output'//char(0)
             strf='011'//char(0)
             call dr1('xset'//char(0),'dashes'//char(0),0,0,0,
         &        0,0,v,dv,dv,dv,dv)
             call plot2d(rect(1),rect(2),1,1,-1,strf,buf,rect,nax,4,21)
             z(1)=0.0d0
             z(2)=t
             call dset(nu*N,0.0d0,z(3),1)
          elseif(flag.eq.5) then
             wid=ipar(1)
             N=ipar(3)
             K=int(z(1))
             if(K.le.1) return
             call dr1('xget'//char(0),'window'//char(0),verb,cur,na,v,v,v,
         $        dv,dv,dv,dv)
             if(cur.ne.wid) then
                call dr1('xset'//char(0),'window'//char(0),wid,v,v,v,v,v,
         $           dv,dv,dv,dv)
             endif
             call dr1('xset'//char(0),'use color'//char(0),ipar(2),0,0,
         &        0,0,v,dv,dv,dv,dv)
             do 30 i=1,nu
                call dr1('xpolys'//char(0),'v'//char(0),v,v,ipar(3+i),
         &           1,K-1,v,z(2),z(2+N+(i-1)*N),dv,dv)
     30      continue
          endif
          call dr1('xsetdr'//char(0),name,v,v,v,v,v,v,
         $     dv,dv,dv,dv)

          end